الفهرس 
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Abstract
Fibromyalgia is the most common chronic pain syndrome encountered in Rheumatology practice (Perrot et al.,2008). The disorder overwhelmingly affects females more than males (Krypel et al.,2008). The estimated prevalence of fibromyalgia in Egypt was 1.3-2.4% (Abdel-Tawab et al.,2004,awadalllaet al.,1997).
Aim of the work:-Our aim was to translate and cross-culturally adapt the fibromyalgia impact questionnaire (FIQ) into Arabic and then evaluate its reliability and validity.
Material and Methods:- The Arabic version of fibromyalgia impact questionnaire( FIQ-A) was adapted following the translation and back-translation methodology (Beaton et al.,2000). A total of 51 Female patients with fibromyalgia (FM) were studied for the psychometric properties of the Arabic version of fibromyalgia impact questionnaire (FIQ-A). Reliability was analyzed by the Spearman correlation coefficient between test and retest. Internal consistency was checked by the Cronbach’s alpha coefficient. To analyze Construct validity we compared FIQ-A with Health Assessment Questionnaire (HAQ), Health Assessment Questionnaire of fibromyalgia (FHAQ), The Medical Outcome Survey Short Form-36( SF-36), and the total visual analogue scale for fibromyalgia symptom (TVAS). Feasibility was analyzed by the time taken in completing the FIQ-A and the proportion of patients able to complete the questionnaire without assistance .
Results :Translation was concordant. Adaptation affected at 4 sub-items of physical function. Fifty one FM patients completed the Questionnaires. Mean age was 33.2 ± 9.8 years .Test-retest correlation was 0.92 for total FIQ-A (Ranged from 0.39 for Feel good domain to 0.83 for pain domain . Cronbach’s alpha was 0.72. Significant correlations (p < 0.005) were found between the FIQ-A items and HAQ, FHAQ, SF-36. The mean time for completing FIQ-A was 3.7 minutes. In 5.9% of the patients external help was needed.
In conclusion, the FIQ-A is a reliable, valid tool for measuring health status and physical function in Arabic speaking FM patients.